Preparation of latexes of color coupler polymers
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United States of America Patent
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May 21, 1991
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N/A
app pub date -
Dec 14, 1988
filing date -
Dec 15, 1987
priority date (Note) -
Expired
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Abstract
A method of preparing a latex of a color coupler polymer which method in characterized in that it comprises dissolving in at least one ethylenically unsaturated non-coupling monomer which is liquid at room temperature at least two monomeric color couplers, the total amount of couplers being from 1 to 50% by weight of the non-coupling monomer, and dispersing this solution in an aqueous solution of a surfactant and a polmerization initiating system, and wherein the melting point of the mixture of monomeric color couplers is below the reaction temperature of said polmerization system.
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